package myThread;

public class demo15 {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
        Thread t1 = new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                count++;
            }
        });

        Thread t2 = new Thread(()->{
            for (int i = 0; i < 50000; i++) {
                count++;
            }
        });
        t1.start();
        t2.start();

        //如果此处没有这两个 join ,count为0,原因是main线程先执行打印了
        //join的作用是: 让主线程等待子线程执行完毕
        t1.join();
        t2.join();
        System.out.println(count);
    }
}
